Articles tagged with Dopamine
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Researchers identified novel region-specific molecular markers for targeting specific subpopulations of dopamine D2 receptor neurons in the striatum, revealing functional specificity among these neuron populations. The study found that D2 neurons in different areas of the brain express distinct proteins and exhibit altered functions.
Researchers have identified RasGRP1 as a key cause of Parkinson's dyskinesia, a debilitating side effect of dopamine replacement therapy. Inhibiting RasGRP1 production in the brain can diminish involuntary movements without negating the useful effects of dopamine therapy.
Dopamine plays a critical role in regulating gene expression, particularly in the context of cocaine abuse. Histone dopaminylation affects brain regions involved in motivation and reward behavior.
Researchers at Champalimaud Centre for the Unknown identified a novel digestive-brain axis that influences food choice and behavior. The study found that post-ingestive signals from the liver through the Vagus Nerve play a crucial role in learning to prefer nutritious foods.
Dopamine released deep within the brain influences both nearby and distant brain regions, with significant effects found in the motor cortex and insular cortex. High dopamine concentrations promote longer periods of neuronal activity, suggesting a key function in learning and reward processing.
A new study from Brown University researchers reveals that Ritalin and similar medications primarily direct the brain to emphasize task benefits over costs. The study found that increased dopamine levels in the striatum region motivate individuals to focus on the positive aspects of completing difficult tasks.
A recent study in mice found that psychosis may be caused by problems with specialized nerve cells and learning behavior. The researchers hope this could provide insight into the emergence of delusions in patients with psychosis or schizophrenia.
A high sugar diet during pregnancy can lead to increased progesterone levels and changes in dopamine function, which may affect mother-pup interaction and long-term mental health. The study suggests that limiting added sugars to 5-10% of daily calories may have benefits for metabolic and hormone health.
Researchers found that novelty activates dopamine neurons, promoting associative learning in animals and humans. This discovery has implications for improving learning strategies and designing more efficient machine learning algorithms.
Researchers at Cedars-Sinai Medical Center found that people with Parkinson's disease before age 50 were born with disordered brain cells. The study suggests a potential new treatment using PEP005, which reduced alpha-synuclein levels and countered abnormal enzyme activity in dopamine neurons.
A new study suggests that targeting astrocyte calcium signaling could decrease amphetamine behavioral effects and potentially develop therapies for diseases with dysregulated dopamine. Astrocytes were previously considered 'support cells', but now shown to actively contribute to brain function.
Researchers discovered that Parkinson's disease symptoms begin when dopaminergic neurons are in a dormant state, not just after death. Treatment targeting excessive astrocytic GABA may alleviate symptoms by awakening dormant neurons.
A recent clinical trial found that nilotinib increases dopamine levels and reduces neurotoxic proteins in people with Parkinson's disease. The study also showed potential in halting motor and non-motor decline, making it a promising treatment option.
Researchers discovered that myokine Dpp, produced by skeletal muscle, regulates feeding behavior by modulating dopamine levels in the brain. This finding sheds new light on the mechanisms governing feeding behavior and has implications for understanding metabolic diseases.
Scientists have discovered a novel protein function involved in the brain's reward circuit, which plays a major role in drug dependence and psychological disorders. The study found that this protein, Npas4, interacts with other proteins to facilitate neural changes and promote gene expression.
Researchers at the University of Toronto have discovered the brain cells responsible for nicotine aversion in mice, paving the way for new treatments to help smokers quit. The study found that dopamine neurons signal reward and GABA neurons signal aversion in the ventral tegmental area.
Researchers found that dopamine-producing nerves in young mice enhance allergic inflammation, while older mice do not. This discovery highlights the importance of interactions between the nervous system and immune system in childhood asthma, providing potential novel therapeutic targets for early intervention.
A study published in Scientific Reports reveals the dopamine D2 receptor plays a crucial role in modulating Wnt expression and controlling cell proliferation, which may lead to new therapeutics for nephrology, endocrinology, and psychiatry. The findings also have implications for the development of precision medicine.
Researchers at Mayo Clinic have identified a way to slow and reverse fibrosis by targeting a dopamine receptor, which blocks the growth of scar-forming cells. The approach reversed fibrotic processes in lung and liver models, offering a new treatment concept for fibrotic diseases.
Researchers at OIST discover a feedback loop that modulates dopamine levels in response to methylphenidate, suggesting therapeutic effects may be indirect consequences of this regulatory process. The study sheds light on the complex interactions between dopamine systems and ADHD treatment.
A team of researchers has developed a new method to detect neurotransmitters at extremely low concentrations using an electrochemical approach. This breakthrough could lead to early detection of diseases such as depression and Alzheimer's, allowing for more effective treatment.
Researchers at Boston University School of Medicine found that chronic cyclic pattern of overeating can reduce the brain's ability to feel reward, leading to compulsive eating behaviors. The study suggests that future treatments should focus on rebalancing the mesolimbic dopamine system.
A proof-of-concept trial found ecopipam significantly reduced stuttering symptoms, including increased speech fluency and faster reading completion. The medication was well-tolerated, with no serious adverse effects or signals of weight gain or abnormal movement disorders.
Research at University College London found that minute-to-minute fluctuations in human brain activity, linked to dopamine levels, impact decision-making. When the brain's dopaminergic midbrain is in a state of low activity, individuals are more likely to choose risky options.
A clinical trial published in Appetite found that transcranial direct current stimulation (tDCS) can reduce or increase appetite depending on a patient's genetic profile. The study used a current of 2 milliamperes and 17 thirty-minute sessions over a month, with participants monitored for six months.
Researchers blocked dopamine receptors in rats to reduce cocaine-seeking behavior, with varying longevity. The study reveals the unique roles of the basolateral and central amygdala in cocaine reward behaviors.
Researchers have discovered a brain protein mutation associated with autism that alters behavior in mice, mimicking human autism spectrum disorder and attention deficit hyperactivity disorder. The study suggests a potential mechanism underlying some of the altered behaviors observed in ASD.
A Louisiana State University biologist conducted a groundbreaking study using PET scans on wild songbirds to understand the role of dopamine in stress resilience. The research found that dopamine receptors decrease over time during captivity, leading to anxiety-related behaviors.
A study found that women tend to procrastinate due to a genetic predisposition towards high dopamine levels, which affects brain regions involved in decision-making and impulse control. This trait is not observed in men, who show no correlation between the tyrosine hydroxylase gene and action control.
Researchers are developing materials inspired by mussel threads that can remove heavy metals, organic pollutants, and pathogens from wastewater. These innovations could help mitigate environmental damage after oil spills.
Parkinson's UK is partnering with NRG Therapeutics to develop a potential drug that could safeguard dopamine cells and slow down the progression of Parkinson's. The partnership will support the identification of novel molecules to protect mitochondria within dopamine-producing cells.
Researchers have found an enzyme in the body that metabolizes compounds from tobacco smoke, alcohol, and certain foods into chemicals that trigger Parkinson's disease. Mitochondrial CYP2D6 is a promising new target for treating idiopathic Parkinson's disease.
Researchers discovered that dopamine decreases hair cell sensitivity in female fish's inner ear, but reduces inhibition via D2a receptors during summer, increasing hearing sensitivity. This study sheds light on the neural mechanisms of acoustic communication in vertebrates.
A study published in Science reveals that certain gut bacteria can degrade levodopa, the primary treatment for Parkinson's disease, by converting it into dopamine outside the brain. Researchers identified Lactobacillus brevis as a key player in this process and found a molecule capable of inhibiting the bacterial enzyme responsible. Th...
Researchers have found that anle138b can reduce alpha-synuclein clumps, restore dopamine levels and stop the progression of Parkinson's. Early treatment may be crucial in stopping the condition in its tracks.
A new study suggests that chronic inflammation disrupts the brain's dopamine system, leading to motivational impairments in depression, schizophrenia, and other disorders. The researchers developed a computational method to test their theory, which may yield insights into treating cases of depression and behavioral disorders.
A new study reveals that a previously unknown neural circuit, PPL2, plays a crucial role in regulating the strength of memories in fruit flies. The researchers found that activating this circuit can strengthen or weaken memories, depending on the context.
A newly discovered epigenetic hotspot in the genome may drive psychosis in schizophrenia and bipolar disorder, potentially leading to new treatment targets and biomarkers. The hotspot affects dopamine production and synaptic development, which are critical regulators of brain function.
Research on Caenorhabditis elegans reveals dopamine's role in sex-specific behaviors, such as food finding and mating strategies. The study demonstrates how dopamine acts through different molecular pathways to give rise to these differences.
Researchers have developed a new quantum material that can automatically detect hydrogen levels in the brain, offering potential early detection of neurological diseases like Parkinson's. The material uses ionic currents to identify molecules, such as glucose and dopamine, which serve as indicators of brain health.
A new study reveals dopamine generates sustained activity in ensemble of cells in the prefrontal cortex, lasting up to 20 minutes. This coordinated activity supports complex functions such as motivation and attention to complete a task.
Researchers at The University of Queensland have created a new animal model of schizophrenia that specifically targets elevated dopamine levels in the dorsal striatum. This model enables scientists to test potential therapeutics and explore the basic changes in brain circuitry that contribute to the disease.
Researchers used C. elegans to investigate the importance of NDEL1 genes in treating schizophrenia. They found that suppressing these genes may be linked to resistance to certain antipsychotic drugs.
Researchers at UCF developed a rapid sensor to detect dopamine levels in blood, which can help diagnose brain disorders such as Parkinson's disease and depression. The sensor requires only a few drops of blood and provides results in minutes, revolutionizing current detection methods.
Researchers found that nilotinib increases dopamine levels by reducing toxic alpha-synuclein protein, allowing normal dopamine release. The study also showed a significant reduction in alpha-synuclein levels and increased TREM-2 activity, indicating an elevated immune response against misfolded proteins.
Researchers have successfully pharmacologically activated Nurr1, a key molecule implicated in Parkinson's disease, offering a potential new treatment strategy. The breakthrough discovery provides valuable leads for developing drugs to restore proper dopamine balance and slow the progression of the disease.
Using a mouse model of Parkinson's disease, researchers identified unusual patterns of brain activity that appear to underlie its signature symptoms. The striatal neurons' normal pattern of activity warps when dopamine levels are low, leading to synchronized cell firing and repetitive movements.
Researchers identify neuromelanin-sensitive MRI as a potential biomarker for psychosis, finding associations with dopamine function and severity of symptoms. The study uses NM-MRI signal to measure regional variations in neuromelanin concentration, reflecting dopamine activity.
Researchers at the University of Houston's Akay Lab found that chronic nicotine exposure during pregnancy significantly activates dopamine neurons in newborns, leading to unusually high levels of dopamine. This altered gene expression may hold the key to developing targeted medication to eliminate addiction in offspring.
A new brain pathway has been discovered that triggers impulsive behavior when dopamine signals are passed to an unexpected area of the brain. The pathway involves the amygdala and the bed nucleus of the stria terminalis, a complex brain structure involved in emotional and behavioral responses to stress.
A new study published in PNAS reveals a causal link between dopamine and the reward responses in humans when listening to music. Researchers found that dopamine manipulation led to opposite effects on musical pleasure and motivation, with levodopa increasing hedonic experience and risperidone reducing both.
Researchers found that dopamine precursor levodopa increased hedonic experience and motivational responses, while dopamine antagonist risperidone reduced both. These results suggest that dopamine modulates the reward experiences elicited by music, challenging previous evidence in animal models.
Researchers found that dopamine plays a crucial role in music-evoked pleasure, with levodopa increasing motivation to purchase songs. The study used pharmacological manipulation to alter dopamine levels, revealing its impact on brain reward responses.
Researchers found that gut microbiota can convert levodopa into dopamine, reducing its effectiveness in treating Parkinson's disease. The study suggests that the presence of bacterial tyrosine decarboxylase enzyme contributes to this effect.
Research reveals an important cerebellar function in cognitive and emotional control, shedding light on connections between cerebellar damage and mental challenges. The study also identifies a direct pathway between the cerebellum and the ventral tegmental area, which regulates dopamine release.
Researchers found that mutant mice lacking a dopamine transporter mutation showed no hyperactivity when given cocaine, but still experienced cravings. The study suggests serotonin may play a key role in the brain's response to cocaine.
UTSA researchers have discovered a disconnect between the brain's dopamine system and cocaine addiction. The study found that when working to obtain cocaine, rats experience a reduced dopamine surge compared to working for food, suggesting a different response to effort and reward.
A NIH study suggests that hyperactive immune systems may contribute to the development of age-related brain disorders. Altering a key gene involved in early brain development led to increased autophagy failure and subsequent immune system attack on dopamine-releasing neurons, causing neurodegenerative damage.
A study using PET technology found that dopamine release in the brain happens twice during a meal: first when eating and second when food reaches the stomach. This release is linked to brain regions involved in reward, sensory perception, and higher cognitive functions.
Researchers found that alcohol helps synchronize GABA cells, increasing dopamine release and dependency. The study provides new insights into the mechanism of addiction and could lead to targeted pharmacological treatments.